Analysis of functionally graded carbon nanotube-reinforced composite structures: A review

Zhang, Hang; Gao, Cong; Li, Haichao; Pang, Fuzhen; Zou, Tongda; Wang, Hong-Fu; Wang, Na

doi:10.1515/ntrev-2020-0110

Cited by 27 publications

(6 citation statements)

References 141 publications

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“…Desirable wound dressings must have excellent mechanical properties to maintain integrity during the treatment period and to withstand the forces applied, which are mainly tensile rather than compressive. Therefore, tensile tests were carried out to determine the stretchability of wound dressings of various compositions Figure S2 demonstrates the stress–strain curves of the pure electrospun PA6 nanofibers and the electrospun PA6/PVA nanofibrous composite loaded with different amounts of CMWCNT-Cur.…”

Section: Resultsmentioning

confidence: 99%

“…Therefore, tensile tests were carried out to determine the stretchability of wound dressings of various compositions. 53 Figure S2 demonstrates the stress−strain curves of the pure electrospun PA6 nanofibers and the electrospun PA6/PVA nanofibrous composite loaded with different amounts of CMWCNT-Cur. Also, in Table 1, the data obtained from the stress−strain curves of these nanofibers are tabulated.…”

Section: Physical Propertiesmentioning

confidence: 99%

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Drug-Loaded Carbon Nanotube Incorporated in Nanofibers: A Multifunctional Nanocomposite for Smart Chronic Wound Healing

Shakiba

Jahangiri

Rahmani

et al. 2023

ACS Appl. Polym. Mater.

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A proper dressing for chronic wounds should be able to preserve moisture while absorbing the exudates and exhibit good antibacterial properties and reliable mechanical properties. Furthermore, drug delivery through a wound dressing is an added value that brings more therapeutic and regenerative functionalities. In this study, a carboxylated multiwalled carbon nanotube–curcumin hybrid composite was embedded in a polyamide 6/poly(vinyl alcohol) nanofibrous composite (PA6/PVA/CMWCNT-Cur) for controlled drug release and potential wound healing application. PA6/PVA/CMWCNT-Cur nanofibrous composites were synthesized in two steps. First, Cur was loaded throughout the CMWCNT, and then a cross-linked PA6/PVA/CMWCNT-Cur blend solution was electrospun at CMWCNT-Cur concentrations of 0.5, 0.75, and 1 wt %. The results showed that incorporating PVA and CMWCNT-Cur into the PA6 nanofiber improved its wettability, physical properties, and biodegradability. In addition, the optical density technique demonstrated that the produced nanofibers had high antibacterial activity, which effectively inhibited the development of Staphylococcus aureus and Escherichia coli bacteria. Due to its uniform nanofibrous structure, superior mechanical capabilities, and excellent antibacterial features, the PA6/PVA/CMWCNT-Cur hybrid nanofibrous composite containing 0.75 wt % CMWCNT-Cur was chosen as the most suitable sample. Studies on the release of Cur from the nanofibers at different pH values demonstrated a faster rate in mild acidic media. The cell viability against the L929 cell line showed that the PA6/PVA/CMWCNT-Cur hybrid nanofibrous composite significantly increased the cell viability and proliferation. This work provides a simple and quick strategy for producing a multifunctional nanofibrous mat for wound healing applications.

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Section: Resultsmentioning

confidence: 99%

Section: Physical Propertiesmentioning

confidence: 99%

Drug-Loaded Carbon Nanotube Incorporated in Nanofibers: A Multifunctional Nanocomposite for Smart Chronic Wound Healing

Shakiba

Jahangiri

Rahmani

et al. 2023

ACS Appl. Polym. Mater.

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“…Here 'L' represents length of beam, 'b' the width and 'h' the thickness of FG beam. The top surface of the FG beam is combined with piezoelectric material layer having length L p and thickness h p. The volume fraction is defined as follows (figure 1(b)) [5]:…”

Section: Model Developmentmentioning

confidence: 99%

“…They observed that volume fraction of CNT is significantly influencing the bending deflection as well as natural frequency. Zhang et al [5] published a review on studies of FGCNT reinforced structures. Jia et al [6] examined the mechanical and electrical behaviour of FG beams using couple stress theory and observed that when applied voltage decreases, the buckling temperature increases with increased volume fraction of CNT.…”

Section: Introductionmentioning

confidence: 99%

Bending and vibration study of carbon nanotubes reinforced functionally graded smart composite beams

Kumar

Sarangi

2022

Eng. Res. Express

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A study of smart functionally graded (FG) beams made of carbon nanotube (CNT) reinforced composites combined with piezoelectric materials is presented. The material parameters of the composite beams are assumed to vary along their thickness following extended rule of mixture. A finite element (FE) model was developed for the FG carbon nanotube-reinforced beam combined with piezoelectric materials. This model was tested against previously published studies and was found to be in accordance with them. The numerical results were evaluated using various boundary conditions and are presented. The appropriateness of the piezoelectric layer for deflection control of the FG beam is presented followed by the free vibration results. The numerical analysis revealed that the piezoelectric layer of the smart FG beam efficiently controlled the bending deflections of the presently studied carbon nanotube-reinforced FG beams. Various material profiles for grading FG beams were considered and the results are presented.

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“…In particular, the discovery of CNTs has increased their popularity, as well as the availability of nanocomposites. Today, among the nanocomposites formed by the reinforcement of the main matrix with carbon nanotubes, polymer-based nanocomposites are more popular than metal and ceramic-based nanocomposites, and are used more frequently in various industries [ 14 , 15 , 16 , 17 , 18 , 19 , 20 , 21 , 22 , 23 , 24 , 25 ].…”

Section: Introductionmentioning

confidence: 99%

On the Solution of Thermal Buckling Problem of Moderately Thick Laminated Conical Shells Containing Carbon Nanotube Originating Layers

2022

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This study presents the solution for the thermal buckling problem of moderately thick laminated conical shells consisting of carbon nanotube (CNT) originating layers. It is assumed that the laminated truncated-conical shell is subjected to uniform temperature rise. The Donnell-type shell theory is used to derive the governing equations, and the Galerkin method is used to find the expression for the buckling temperature in the framework of shear deformation theories (STs). Different transverse shear stress functions, such as the parabolic transverse shear stress (Par-TSS), cosine-hyperbolic shear stress (Cos-Hyp-TSS), and uniform shear stress (U-TSS) functions are used in the analysis part. After validation of the formulation with respect to the existing literature, several parametric studies are carried out to investigate the influences of CNT patterns, number and arrangement of the layers on the uniform buckling temperature (UBT) using various transverse shear stress functions, and classical shell theory (CT).

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Analysis of functionally graded carbon nanotube-reinforced composite structures: A review

Cited by 27 publications

References 141 publications

Drug-Loaded Carbon Nanotube Incorporated in Nanofibers: A Multifunctional Nanocomposite for Smart Chronic Wound Healing

Drug-Loaded Carbon Nanotube Incorporated in Nanofibers: A Multifunctional Nanocomposite for Smart Chronic Wound Healing

Bending and vibration study of carbon nanotubes reinforced functionally graded smart composite beams

On the Solution of Thermal Buckling Problem of Moderately Thick Laminated Conical Shells Containing Carbon Nanotube Originating Layers

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